/*
GanttProject is an opensource project management tool.
Copyright (C) 2011 GanttProject Team

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package net.sourceforge.ganttproject.action.scroll;

import java.awt.event.ActionEvent;

import net.sourceforge.ganttproject.action.GPAction;
import net.sourceforge.ganttproject.chart.ChartModel;
import net.sourceforge.ganttproject.gui.scrolling.ScrollingManager;
import net.sourceforge.ganttproject.task.TaskLength;
import net.sourceforge.ganttproject.task.TaskManager;

public class ScrollTimeIntervalAction extends GPAction {
    private final ScrollingManager myScrollingManager;
    private final int myInterval;
    private final TaskManager myTaskManager;
    private final ChartModel myChartModel;

    public ScrollTimeIntervalAction(String name, int interval,
            TaskManager taskManager, ChartModel chartModel, ScrollingManager scrollingManager) {
        super(name);
        myScrollingManager = scrollingManager;
        myInterval = interval;
        myTaskManager = taskManager;
        myChartModel = chartModel;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        myScrollingManager.scrollBy(createTimeInterval());
    }

    private TaskLength createTimeInterval() {
        return myTaskManager.createLength(myChartModel.getBottomUnit(), myInterval);
    }

}
